Climate Change - A change in global or regional climate patterns, Global Warming - A gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants., Ozone Layer Destruction - Consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions., Deforestation - The action of clearing a wide area of trees., Endangered Species - A species of animal or plant that is seriously at risk of extinction., Melting Caps - The melting of the polar ice caps is caused by the overall increase in global temperature, and this melting can have serious consequences for all organisms on Earth., Pollution Factory emissions - It is the term used to describe the gases and particles which are put into the air or emitted by various sources. National Trends. The amounts and types of emissions change every year., Exhaust Fumes - Gases ejected from an engine as waste products, Water Pollution - It is the contamination of water bodies, usually as a result of human activities. Water bodies include for example lakes, rivers, oceans, aquifers and groundwater., Noise Pollution - It is an invisible danger. It cannot be seen, but it is present nonetheless, both on land and under the sea.,

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